Simple 2D triangle in COLLADA

<?xml version="1.0" encoding="UTF-8" standalone="no" ?>
<!-- Simple 2D triangle in COLLADA -->
<!-- by miguelmartins1987 -->

<COLLADA xmlns="http://www.collada.org/2005/11/COLLADASchema" version="1.4.1">
    <!-- Z axis = UP axis -->
    <asset>
        <up_axis>Z_UP</up_axis>
    </asset>
    <!-- Define a Google SketchUp scene (which shall be the only scene) -->
    <library_visual_scenes>
        <visual_scene id="MyScene">
            <node name="SketchUp">
                <instance_geometry url="#MyTriangle"/>
            </node>
        </visual_scene>
    </library_visual_scenes>
    <!-- Begin defining geometries -->
    <library_geometries>
        <!-- Just a simple triangle (including normal) -->
        <geometry id="MyTriangle">
            <mesh>
                <!-- Define a triangle with coordinates
                (0,0,0) (1,0,0) (0,1,0) -->
                <source id="MyTrianglePosition">
                    <float_array id="MyTriangleCoordinates" count="9">0 0 0 1 0 0 0 1 0</float_array>
                    <technique_common>
                        <accessor count="3" source="#MyTriangleCoordinates" stride="3">
                            <param name="X" type="float" />
                            <param name="Y" type="float" />
                            <param name="Z" type="float" />
                        </accessor>
                    </technique_common>
                </source>
                <!-- The normal shall be (0,0,-1) (parallel to the Z axis) -->
                <source id="MyTriangleNormal">
                    <float_array id="MyTriangleNormalCoordinates" count="9">0 0 -1 0 0 -1 0 0 -1</float_array>
                    <technique_common>
                        <accessor count="3" source="#MyTriangleNormalCoordinates" stride="3">
                            <param name="X" type="float" />
                            <param name="Y" type="float" />
                            <param name="Z" type="float" />
                        </accessor>
                    </technique_common>
                </source>
                <!-- Reference the position and the normal defined before -->
                <vertices id="MyTriangleVertices">
                    <input semantic="POSITION" source="#MyTrianglePosition" />
                    <input semantic="NORMAL" source="#MyTriangleNormal" />
                </vertices>
                <!-- The triangles contained by this geometry -->
                <triangles count="1">
                    <input offset="0" semantic="VERTEX" source="#MyTriangleVertices" />
                    <p>0 1 2</p>
                </triangles>
            </mesh>
        </geometry>
    </library_geometries>
    <!-- Allow the application to render our only scene -->
    <scene>
        <instance_visual_scene url="#MyScene" />
    </scene>
</COLLADA>